Re-install os885 on XO-1.5 error

[James Cameron]

Good to hear.

USB flash drives can be unreliable.  There are so many things that can
go wrong.

On Thu, Jun 13, 2013 at 04:28:48PM +1100, David Leeming wrote:
> Thanks again James. 
> 
> The md5sum was OK so I reformatted the USB stick and tried again - and no
> error. I have done this so many times before on XO-1 but never seen this. So
> the first time I tried on XO 1.5 it happened. I must remember the old adage,
> if the car doesn't start maybe it has no petrol...
> 
> David 
> 
> 
> -----Original Message-----
> From: quozl at us.netrek.org [mailto:quozl at us.netrek.org] On Behalf Of James
> Cameron
> Sent: Thursday, 13 June 2013 3:47 p.m.
> To: David Leeming
> Cc: 'OLPC Devel'
> Subject: Re: Re-install os885 on XO-1.5 error
> 
> G'day David,
> 
> The CPU temperature of 54 celcius is a bit on the high side.  Please
> run the heat spreader test on this unit:
> 
> 	ok test /switches
> 
> If the heat spreader does not contact the CPU properly, the
> temperature can rise too much during installation.  If the temperature
> is too high, the CPU can pause, or make mistakes.
> 
> Significant gaps, blocks staying gray, are normal, and nothing to
> worry about.  These blocks don't need to be written, so the .zd file
> does not write to them.  This saves on downloads.
> 
> The error "Wrong expanded data length" means that the file was not
> correct on the USB drive, or the USB drive could not be read.  The
> task was aborted.  Things you can try:
> 
> * check the file using md5sum, see
>   http://wiki.laptop.org/go/Download#Verifying
> 
> * try a different USB drive,
> 
> * don't use a USB hub,
> 
> * disconnect any other USB devices,
> 
> * try a different port on the laptop,
> 
> * upgrade the firmware; you are using Q3C07, but Q3C08 contains a fix
> for USB drives with embedded hubs, and Q3C13 has a fix for USB drives
> with unusual partitioning.  Q3C15 is the latest version.
> 
> That the XO starts up OK afterwards is not a valid test, since it
> would likely have the same build already installed.
> 
> No logs are kept of firmware operations, so you won't find any
> evidence; you have to repeat the problem and gather data that way.
> 
> -- 
> James Cameron
> http://quozl.linux.org.au/
> 
> 
> 

-- 
James Cameron
http://quozl.linux.org.au/